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Use of time and space

  • Robert J. Wootton

Abstract

Fishes use the dimensions of time and space in many ways. The individuals of some species spend all their lives close to where they were spawned. In other species, individuals make long migrations covering hundreds or thousands of kilometers. There are species that have vertical migrations, with individuals moving up and down in the water column. The ecological significance of many of these patterns of movement is unexplained. The reproductive advantage gained is not always obvious. In several species, for example the European trout, Salmo trutta, some populations migrate covering long distances yet other populations remain resident in one area and show only restricted movements. A single watershed frequently holds both migratory and resident populations of S. trutta. Why is it advantageous for some individual trout to migrate, while other coexisting individuals remain as residents in the watershed?

Keywords

Coral Reef Home Range Vertical Migration Sockeye Salmon Yellow Perch 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© R. J. Wootton 1990

Authors and Affiliations

  • Robert J. Wootton
    • 1
  1. 1.Department of Biological SciencesUniversity College of WalesUK

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